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教学目标:1.使学生认识长方体正方体,掌握长方体、正方体的特征。2.使学生认识并理解长方体、正方体的长、宽、高。能运用长方体和正方体的特点解决一些简单问题。3.通过引导学生观察、操作,培养学生初步的空间观念和想象能力。教学重、难点:1.掌握长方体、正方体的特征,弄清长方体、特别长方体、特殊长方体的内在联系。。2.初步建立“立体图形”的概念,形成表象。教学准备:多媒体课件;长方体、正方体模型;长方体框架;一叠A4纸。
Teaching Objectives: 1. To enable students to recognize cuboid cubes, grasp the characteristics of cuboids, cubes. 2. To enable students to understand and understand the cuboid, cube’s length, width and height. Can use the characteristics of cuboids and cubes to solve some simple problems. 3. By guiding students to observe and manipulate students’ initial spatial concepts and imagination. Teaching heavy, difficult: 1. Master the characteristics of cuboids, cubes, to understand the cuboid, special cuboids, the special relationship between the rectangular box. . 2. The initial establishment of “three-dimensional graphics” concept, the formation of appearance. Teaching preparation: multimedia courseware; rectangular, cube model; rectangular frame; a stack of A4 paper.